No one ever mentions Möngke Khan! Apparently, invading India and Korea and conquering South China, Vietnam, Tibet and the whole Middle East is not good enough for you guys!

BTW, Attila was a Hun, not a Mongol, and therefore not a Khan. Khan (Noonien Singh) was also not a Khan, even though his name was (will be?) Khan. Former FC Bayern and German National Team goalkeeper Oliver Kahn was not a Khan, either - but probably one of his distant ancestors was a Khan (hence the name) - but a "Titan" (which is his unofficial, and unfortunately self-appointed, nickname).

Also, why did Khan (Noonien Singh) look like Ricardo Montalban for most of his life, only to suddenly bear an uncanny resemblance to Benedict Cumberbatch?

Another fun fact: did you know that Genghis Khan looked a lot like John Wayne?

Matt Wagner, please clarify!